of amanda knox and the west memphis three. he is the real life inspiration for fbi agent jack crawford on silence of the lambs. joining us in the guest spot in the flesh. legendary fbi profiler, john douglas. and his new book, "law and disorder." i see what you did there is on shelves now. now that you're retired and unshackled, tell us about some of the more notorious cases that you've worked. >> well, i work cases that receive national publicity and some of the most interesting cases that never received the national publicity. the cases like from david burk wits to the ted bundy, john gacy, to a case in anchorage, alaska, to a plan hunted women down like wild animal. i was over in england on the ripper case. i was in california on the trail side killing case. the unibomber. pretty much a who's who in the types of cases that i work. >> john, i'm kind of curious. not sure exactly how to phrase this. the term would be like a successful serial killer. but somebody who actually gets away with it for a long time. somebody like that have to be of high intelligence to be able to pull it off?